[go-nuts] Is the mem layout the same between go and c?

[hui zhang]

If I define the same  2 struct in c and go
can they be  passed directly with unsafe.Pointer
and how to export go struct from go to c ?   

/*
#include <stdio.h>

typedef struct {
    int a;
    int b;
} Foo;

void pass_struct(Foo *in) { printf("%d : %d\n", in->a, in->b); }

*/

import "C"
import (
    "fmt"
    "unsafe")

type Foo struct{ a, b int32 }

C.pass_struct((*C.Foo)(unsafe.Pointer(&foo)))

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